pfCAVELib supports the simulator display and tracking. The simulator display includes the same controls and CAVE and wand rendering as in the CAVELib; the timing command displays Performer's channel statistics. Tracking is updated in the main application process (by pfCAVEPreFrame); when multiprocessing, this process does not have a window associated with it, so there is no advantage to using serial tracking with the simulator tracker. In fact, it can significantly increase the time taken by the application stage. In this case, you may get better performance by adding 'SerialTracking n' to your configuration for simulator mode (after 'Simulator y' or 'TrackerType simulator'). See the chapter on Simulation mode for more details.